550 W. B. STOKES, XOTE ON A :\IETALLURGICAL STAGE. 



movement, it is evident that we only require a stage plate 

 fixed to a stem, which fits into a substage adapter in such 

 a way that the stem passes through the ordinary stage aperture. 

 (See the accompanying diagram.) 



The present form, which has been made by Messrs. Swift 

 & Son, though simple, is capable of any necessary elaboration. 

 For instance, as it is seldom that metal sections have their 

 upper surfaces parallel to the stage, a levelling carrier must be 

 employed. This may take the shape of a plate, through Avhich 

 pass three screws with milled heads at equidistant tapped holes 

 near the edge ; then the carrier will be a tripod with legs of 

 variable length by which the section may be placed with its 

 surface at right angles to the optic axis and moved about in 

 that position. If the microscope be inclined, large bowed 

 spring clips must be attached to the lower face of the carrier 

 to curl round the edge of the focussing stage and press against 

 its lower surface. 



Journ. Quekett Microscopical Club, Set: 2, Vol. VJJI., No. 53, November 1903. 



